Machine for riveting chaplets.



v. DAVIS. MACHINE FOR RIVETING GHAPLETS.

2 SHEETS-SHEET 1.

I Patented Dec. 7, 1909.

APPLIOATION FILED MAY 15, 1909.

V. DAVIS. MACHINE FOR RIVETING ommws.

APPLIOATIOH FILED MAY 15, 1909. F

Patented Dee. 1,1909.

UNITED %TATE% Iie iIENT FFIDE.

VIBER'I DAVIS, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR RIVETING OI-IAPLETS.

Application filed May 15, 1909.

To all whom it may concern:

Be it known that I, Vnsnnr DAVIS, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Machines for Riveting Chaplets, of which the following is a specification.

The object of my invention is to improve the construction of machines for riveting the parts of a chaplet together after being assembled. These chaplets are used in the molding process for supporting the core, forming what may be termed a core anchor and are incorporated into the metal when the casting is made.

In the accompanying drawings Figure 1, is a plan view of my improved chaplet making machine; Fig. 2, is a transverse sectional view on the line 2-2, Fig. 1; Fig. 3, is an enlarged transverse sectional view showing the dies for retaining the chaplet while the stems are being riveted; Fig. l, is a sectional view on the line H, Fig. 1; Fig. 5, is a view showing the parts of a chaplet assembled before being introduced into my improved machine; and Fig. 6, is a sectional view showing the finished chaplet.

A is the base frame of the machine, supported in the present instance upon standards A.

B is the fixed punch adapted to a threaded opening in a block B made in halves, which are secured together by bolts 1); by this arrangement the position of the punch can be varied at will. The lower portion of the block in the present instance is formed integral with the base frame A.

D is the movable punch carried by a slide D having projections adapted to guides a on the frame A, and this punch is actuated by a cam on a power shaft C having a belt pulley C.

E, E are two rotary dies having notches e, 6 respectively in the peripheries. In the present instance there are eight notches in each die, but it will be understood that the number of notches may be increased or diminished as desired. The notches c, e are of such a size as to accommodate the stem or rivet i on which are mounted the disks '5. The dies are also of such thickness as to accommodate the stem '5 of the disks fitting snugly against each side of the dies. By this arrangement each chaplet I, when it reaches the point 00, is held firmly by both dies, while the movable punch D is moved Specification of Letters Patent.

Patented Dec. 7, NW9.

Serial No. 496,184.

forward, forcing the chaplet with the two dies toward the fixed punch B, and as the pressure is continued both ends of the stems 2' are pressed by the two punches, as illustrated in Fig. 6.

The die E is mounted on a shaft F and the die E is mounted on a shaft F; these shafts have shoulders f, 7 respectively and are mounted in bearings G, G on the frame A, and the bearings G are half bearings, as clearly illustrated in Fig. 2 and prevent spreading apart of the dies when the punches compress the stems of the chaplet. The shafts are also shouldered at f and a plate I-I bears against these shoulders and is held in contact with them by springs mounted between the plate II and the bearings G; by this construction the dies are free to yield with the movement of the punch D, but will return to their normal position, as shown, as the punch is retracted. On the rear end of each shaft F, F are gear wheels 12, n which mesh with each other so that the shafts turn in unison in the direction indicated by the arrows, Fig. 3. On the shaft F is a ratchet wheel m.

M is a lever mounted loosely on the end of the shaft F and carried by this lever is a pawl m which engages the teeth of the ratchet wheel m, this lever is reciprocated by means of mechanism connected to the driving shaft C so as to intermittently turn the dies one-eighth of a revolution at each movement, in order to carry a chaplet into the proper position to be acted upon by the punches. In the present instance this mechanism consists of a bell crank oted at s to a fixed portion of the machine, one arm of this bell crank lever is connected by a rod 8 to a crank pin 0 on the disk 0 carried by the shaft C. The length of this rod 8 can be regulated by the turn-buckle 8 the other arm of the bell crank lever S is connected to an arm IV forked as shown in the plan view, Fig. 1, for the reception of the end of the lever M, and this arm is slotted at m and adapted to the slot is a pin m carried by the lever M. Pivoted to the arm .I is a slide M also having a pin engaging the slot of, and this slide is connected to the end of the arm by a spring m as shown in Fig. 2.

The chaplets I are fed to the disk E from an inclined way P, as shown in Fig. 3; the

chaplets being arranged on this way as they are received from the assembling machine lever S pivand they drop into the notches e in the dies E as the notches come in line with the end of the way, so that the chaplets are carried from the way P to the position to be acted upon by the punches and are thus fed automatically into position after they are acted upon by the punches, then they drop clear of the machine. A guard L is preferably mounted so as to extend over the space directly above the dies, and this guard tends to hold the chaplets while being fed into position, and also prevents and foreign matter gaining access to the space between the dies.

1 claim l. The combination in a machine for riveting chaplets, of a fixed punch and a movable punch, a pair of dies for carrying the chaplets, means for yieldingly supporting the dies, and means for actuating the movable punch so as to force the chaplet against the fixed punch, whereby the projecting ends are riveted.

2. The combination in a machine for riveting chaplets, of a fixed punch, a movable punch, a pair of rotatable dies situated edge to edge, one of said dies having a series of notches on its periphery, means for rotating the dies, and means for actuating the movable punch.

3. The combination in a chaplet riveting machine, of a fixed punch, a movable punch, two rotatable dies arranged edge to edge, each die having a series of notches in its periphery, said notches alining with each other when in line with the punches, means for yieldingly. supporting the dies, and means for intermittently turning them.

4. The combination in a machine for riveting chaplets, of a fixed punch, a movable punch, a pair of rotatable dies arranged edge to edge, each die having a series of notches in its periphery, shafts supporting the dies, a plate resting against shoulders on the shafts, springs back of the plate which allow the dies to yield when the movable punch contacts with the chaplet held by the dies.

5. The combination in a chaplet riveting machine, of'a base frame, a fixed punch having a threaded portion, bearings on the frame having a threaded opening to receive the fixed punch, so that the said punch can be adjusted when desired, a movable punch, a slide carrying said punch, guides on the frame, means for actuating said movable punch, two shafts adapted to bearings on the frame, a circular die mounted on each shaft, each die having a series of notches to receive the spindle of the chaplet and being of such width that the disks of the chaplet will rest on each side of the dies, said shafts being shouldered, a plate resting against the shoulders, springs back of the plate, so that when the movable punch presses against the spindle of the chaplet it will carry the dies and plate with it, forcing the opposite end of the chaplet spindle against the fixed punch, and means for intermittently rotating the dies. Q

6. The combination in a chaplet riveting machine, of a fixed punch, a movable punch, means for actuating the movable punch, a pair of dies, shafts carrying the dies, said shafts being yieldingly supported, the dies having a series of notches in their peripheries for the reception of the spindles of the chaplets, means for feeding the chaplets to one of said dies, a guard extending above the dies and acting as a guide to hold the chaplets in position on one die while being fed to position in line with the punches, and means for intermittently rotating the shafts carrying the dies.

7. The combination in a chaplet riveting machine, of a base frame, a fixed punch in a bearing on the said frame, two shafts mounted in bearings in the frame, a circular die carried by each shaft, said dies having notches in their peripheries for the reception of the spindles of, the chaplets, means for yieldingly supporting the shafts, a movable punch, means for actuating the punch, a gear wheel on each shaft meshing with each other so as to turn the shafts in unison, a ratchet wheel on one shaft, an arm pivoted to the shaft and carrying a pawl engaging the ratchet wheel, a bell crank lever having one arm connected to the pawl carrying arm and the other arm connected to a crank pin on the driving shaft of the machine, so that the chaplets will be intermittently carried into position to be riveted by the punches.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

vnennr DAVIS.

Witnesses T/VM. E. SHUPE, WM. A. BARR. 

